'''Maj''' may refer to:
, a rank of commissioned officer in many military forces
'', a romantic Czech poem by Karel Hynek Mácha
* Máj (literary almanac)|''Máj'' (literary almanac)
, a Czech literary almanac published in 1858
* Marshall Islands International Airport
* MAJ or ''mis à jour'' - French expression meaning "revision date"
* The name used on French language AZERTY keyboards for the Shift key